Apparatus for leveling and tamping concrete road-beds.



M. A. CONNELLY. APPARATUS FOR LEVELING AND TAMPING CONCRETE ROAD BEDS.APPLICATION man rss. 26. i912.

1,23%91 Patented Aug. 28, 1927.

2 SHEETS-SHEET 1. 3 s 1 2; 1 Z i mz ,2 3 E Q Q I I Q I 4 INVENTEIF z 30{12 13 ATTEJFINEY M. A. CONNELLY. APPARATUS FOR LEVELING AND TAMPINGCONCRETE ROAD BEDS. APPLICATION FILED FEB. 26, 1917.

1,238A9'K Patented Aug. 28, 1917.

2 SHEETS-SHEET 2.

INVENTEIFI ATTEJFINEY.

. mesa-Let.

UT at rnrnnr crimes;

MYLES A. CONNELLY, OF YOUNGSTOWN, OHICD.

APPARATUS FOR LEVELING AND TAMPING (IGNORE-TE RUAD-BEDS.

' posited-Inlay be evenly "spread and tamped to form a'ba'se for thebrick in the construction of brickaved roads.

A "flirt er object is to provide a machine of the character mentionedhaving such width that the full width of the roadway under constructionis thereby traversed and acted upon, thus providing for the formation ofa surface devoid of the irregularities which are commonly incident tothe use of :a'es'preader or. roller which is qf 'relatively narrowgijdth and which, consequently, re- Eiquircs a number of parallel passesto complete-*th'e surfacing of the roadway. v

A still further object is to provide a spreading and tampingrmachinewhich is capable of adjustment to any width necessitated by the width ofthe roadway under construction.

Another object within the contemplation of the invention is to providemeans for abrading or slightly roughing the surface following thetamping of the latter.

With these and other incidental objects in view, the invention residesin the features of construction, arrangement of parts and combinationsof elements which will hereinafter be exemplified, reference being hadto the accompanying drawings, in which Figure. .1 is a view partly intop plan and partly in horizontal section, showing an embodiment of theinvention;

Fig. 2 is a transv, rse section on line 22,

Fig. 3 is 'an enlarged fragmentary sectional view in; perspective,illustrating various features 'if-of the inventicn;fand- Fig. i is anenlarged section on line 4-4, Fla; 1, i

Referring to said drawings, in which like designating charactersdistinguish like parts throughout the several views- Specification ofLetters Patent.

Application fil ed February 26, 1917. Serial No. 150,906,

1 indicates each of two opposite .frame members mounted upon suitablewheels or rollers 2 which are designed, preferably, to travel upontracks constituted by longitudr nal road-defining forms 3. Said. membersare rigidly connected by a cross-member which is preferably composed oftwo channel irons 4 disposed fiatwise and having their outer endsmounted upon said memhere, The inner ends of said channel irons aredisposed'in telescopic relation and rigidly connected by bolts. Rigidlymounted on the under side of said cross-member and also disposed intelescopic relation is a pair of vertically disposed members 5 which mayalso be of channel formand which constitute supports for a verticallydisposed scraper blade or templet 6 which latter may be a single plateor may be composed of a plurality of sections, as desired. Suitablebraces, as 7, are disposed between the members 5 and the frame members 1for maintaining a rigid relation. Rollers 8 and 9 are carried by each ofsaid members 1, the same being designed to ride against the inner facesof the forms 3 for reducing to a minimum the frictional resistance totravel of the machine which would otherwise be encountered in the eventthat one end of the latter should be advanced slightly ahead of theother. Said rollers are mounted upon vertical spindles 10 carried by theinner 1 ends of bolt-like stems 11 which are projected through themembers 1. Said stems carry compression springs 12 thereon between awasher 13 and the outer face of saidmemberl, thus providing for holdingsaid rollers under a yielding tension in engagement with the forms.

Bolted to the rear faces of the blade-supporting members 5 is aplurality of spaced lugs 14- to which are pivotally connected the frontends of short links 15 to the rear ends of which are pivotally connectedthe front ends of frame sections 16, hereinafter termed front-rollbearing sections, which sections are arranged in palrs. 'lhe sectlonscomposing each pair are rlgldly connected at their rear ends to thetransverse conpecting portion of a til-shaped frame section 17,.hereinafter termed rear-roll bearing secthe two endmost thereof has abearing 21 therein in which is journaled a shaft 22 carrying a tampingroller 23. Said rollers 23 have their opposite ends journaled in theadjacent bearing sections of adjacent pairs of said sections, as shown,while each of the rollers 20 is disposed within the embrace of a section17 and has its opposite ends journaled in the opposite members of suchsection. Consequently, the disposition of the rear rollers 20 is suchthat they break joints with the front rollers 23, providing for the.

tamping of the entire width of the roadway under construction at asingle pass of the machine.

Pivotally connected to the free rear end of each of the'parallel membersof the rearroll bearing sections is one end of a link 24 which has itsopposite end attached to a drag 25 which isdesigned to follow therollers for roughening slightly the. surface of the tamped material torender the same better adapted for receiving paving bricks in seatedposition thereon. While said drag may be of any suitable character andmay be made of any appropriate material, I prefer to employ a length ofheavy leather belting, such having been found admirably adapted for thepurpose. Said drag is made in two or more sections having their adjacentends disposed in overlapped relation to adapt the same for adjustmentwith other parts of the machine to suit the width of the roadway beingacted upon.

Suitably mounted upon the front face of the scraper-blade supports 5adjacent to the outer ends of the latter is one end of a forwardly andoutwardly inclined scraper 26 which has a tapered form to permit itsfront end to underlie the adjacent frame member 1, said scraper beingdesigned to spread the material which lies close to the adjacent form 3.A bolt 27 is projected through said scraper at a suitable point andthrough a portion of the adjacent brace 5 and carries thereon acompression spring 31- whereby said scraper is yieldingly maintained ina position wherein its front end scrapes against the inner face of saidform 1.

' Suitable means is provided whereby theheight of the frame members 1and of the attached parts, including the scraper blades or templets 6,may be adjusted to regulate the working level of the latter, said meanspreferably comprising bearing blocks 29 in which are mounted shafts 32upon which the supporting wheels or rollers 2 are rotatable. Saidbearing blocks 29 are vertically movable in yoke-like guideways 28attached to said frame members and are swiveled upon the ends ofvertically disposed adjusting screws 30.

The ends of the foremost of the shafts 32 are preferably of squared formand project outward beyond the guideways 28, the same of the lever 33,the rear end of the frame member 1 may be elevated slightly to effect aslight shifting, or teetering, of said frame member, as for relievingbinding between I said frame member and the form 3. I

As is obvious, due to the non-rigid or pivotal mounting of the rollbearing sections 16 and 17, each of the rollers 20 and 23 acts more orless independently of the others in following the scraper-blades. Whenit .becomes desirable to increase the tamping pressure of the rollers,the roll bearing sections 16 and 17-may serve as supports for plates orbars (not shown) which may be disposed thereon at points betweenadjacent alined rollers for supporting sand bags or the like whereby theweight of the machine may be increased.

To adjust the machine for use upon roads of different widths, thetelescopingand overlapped parts hereinbefore mentloned may be extendedor shortened, and one or more rollers with the necessary supportingsections therefor may be added or' removed, as required, such additionsor removals being preferably made at or near the middle of the width ofthe machine.

It will be apparent that the machine described is readily susceptible tovarious changes and alterations in the construction and arrangement ofits parts. It will therefore be understood that the invention is notconfined to a strict conformity with the, showing herein specificallymade, but the details of construction may be changed and modified to theextent that such changes and modifications mark no material departurefro-m the salient features of the invention as defined in the appendedclaims.

What is claimed is- 1. In a device for leveling and tamping concretepaving beds, a frame disposed across the road bed and adapted foradjustment to varying widths, scraping blades or templets carried bysaid frame, members pivotally connected to said frame and extendingrearward therefrom, said members being arranged in pairs, tampingrollers journaled on said members, Ushaped members disposed rearward ofsaid rollers and connected to the rear ends of said pivoted members, anda tamping roller j ournaled in each of said U-shaped members.

2. In a device for leveling and tampin concrete paving beds, a framedispos across the road bed and adapted for adjust- I means? templetscarried by said frame, members pivotally connected to said frame andextending rearward therefrom, said members being arranged in pairs,tamping rollers j ournaled on said members, U-shaped membeing arranged"in pairs, tamping rollers journaled on said members and disposedbetween adjacent pairs, a plurality of U- shaped members disposedrearward of said rollers, each having the rear ends of a pair of saidpivoted members rigidly attached thereto, and a tamping roller journaledbetween the lateral members ofeach of said U-shaped members.

4. In a device for leveling and tamping concrete paving beds, a framedisposed across the road bed and adapted for adjustment to varyingwidths, scraping blades or templets carried by said frame, memberspivotally connected to said frame and extending rearward therefrom, saidmembers being arranged in pairs, tamping rollers journaled on saidmembers and disposed between adjacent pairs, a plurality of U- shapedmembers disposed rearward of said rollers, each having the rear ends ofa pair of said pivoted members rigidly attached thereto, and a tampingroller journaled between the lateral members of each of said U-shapedmembers, the location of the lastnamed members being such that thetamping rollers journaled therein break joints with the first-mentionedtamping rollers.

55. In a device for leveling and tamping concrete paving beds, a pair ofoppositely disposed frame members, telescoping members disposed acrossthe road bed and connecting said frame members, scraper blades ortemplets supported by said telescoping members, said templets beingadapted for relative adjustment, bars pivotally connected to saidtelescoping members and extending rearward therefrom, a plurality oftamping rollers journaled on said bars, a' plurality of tamping rollersdisposed rearward of the first-mentioned rollers and breaking jointswith the latter, and members in which the last-mentioned rollers are jour- {)mled, said members being connected to said are. v v

6. In a device for leveling, and tamping concrete paving beds, a pair ofoppositely disposed frame members, telescoping members disposed acrossthe road bed and connecting said frame members, scraper blades ortemplets supported by said telescoping members, said templets beingadapted for relative adjustment, vbars pivotally connected to saidtelescoping members and extending rearward therefrom, a plurality of,tamping rollers journaled on said bars, a

plurality of tamping rollers disposed rearward of the first-mentionedrollers and breaking joints with the latter, and a plurality of U-shapedmembers connected to the a rear ends of said bars, the last-mentionedrollers being journaled on said U-shaped members.

7. In a device for leveling and tamping concrete paving beds, a pair ofoppositely disposed frame members, telescoping mem-i bers disposedacross the road bed and con necting said frame members, scraper bladesor templets supported by said telescoping members, said templets being.adapted for relative adjustment, bars pivotally connected to saidtelescoping members and extending rearward therefrom, a pluralityoftamping rollers journaled'on said bars, a plurality of tamping rollersdisposed rearward of the first-mentioned rollers and breaking jointswith the latter, members in which the last-mentioned rollers arejournaled, said members being connected to said bars, and anti-frictionmeans preventing binding of the parts of the frame with roaddefiningforms. a

8. In a device for leveling and tamping concrete paving beds, a pair ofoppositely disposed frame members, telescoping members disposed acrossthe road bed and connecting said frame members, scraper blades ortemplets supported by said telescoping members, said templets beingadapted for relative adjustment, bars pivotally connected to saidtelescoping members and extending rearward therefrom, a plurality oftamping rollers journaled on said bars, a plurality of tamping rollersdisposed rear ward of the first-mentioned rollers and breaking jointswith the latter, members in which the last-mentioned rollers arejournaled, said members being connected to said bars, and forwardly andoutwardly extending yieldably mounted scrapers carried by saidtelescoping members adjacent to the outer ends thereof.

9. In a device for leveling and tampingconcrete paving beds, a mainframe adapted for extending across the roadway, scrapingblades ortemplets carried by said frame, a plurality of. independent roll-bearingframe sections pivotally connected to and extending rearward from saidmain frame, and

tamping rollers mounted in said frame secconcrete paving beds, a frame,scraping naled in the last-mentioned members, said blades or templetscarried by said frame, a rollers being arranged to break joints. 10plurality of pairs of members pivotally In testimony whereof, I afiix mysignature connected to and extending rearward from in presence of twosubscribing Witnesses.

5' said frame, tamping rollers journaled on MYLES A. CONNELLY.

said members, members connected to and Witnesses: extending rearwardfrom the first-men- H. E. DUNLAP, tioned members, and tamping rollersjour- W. F. KEEFER.

